Black or grey powder. The cobalt oxides we manufactured are suitable for making cemented Carbides,magnetic materials and other industries.These type are suitable for making pigments ,ceramic and enamel glazes,etc. in sealed 2-fold plastic bags of 25kg or 50kg net each with outside fibre board drum or iron drum. We can supply four types of cobalt oxides as follows: High Purity Cobalt Oxide, Typically 75% Co content Battery Grade Cobalt Oxide, Typically 73.5% Co content Cobalt Oxide Ceramic Grade, Typically 73% Co content Cobalt Oxide General Grade, Typically 71.5% Co content If you are interested in establishing business relations with us in this line, please let us know your specific requirements by phone or fax or email. We shall be pleased to forward samples/catalogs as well as detailed information for reference. We assure you of our best attention to any inquire from you, and anticipate your prompt response in this respect.